The middle layer of the muscularis; it is continuous with the circular layer of the esophagus, but is absent in the fundus and lies concentric to the longitudinal axis of the stomach; the circular layer is normally tonically constricted forming a functional pyloric sphincter, which controls the movement of chyme into the duodenum [ MP:0010780 ]

Synonyms: stratum circulare tunicae muscularis gastricae circular layer of gastric muscularis circular muscle layer of stomach stratum circulare (tunica muscularis)(gaster) middle circular muscle layer of stomach stratum circulare gastris

This is just here as a test because I lose it

Term information

Subsets

pheno_slim

latin term
stratum circulare tunicae muscularis gastricae [ FMA:TA FMA:14911 ]

external ontology notes

FMA and MP disagree as to whether the circular layer is middle or innermost

function notes

This layer wraps in a circular orientation around the pylorus, and is held in a constricted state normally. The normal constriction of this muscle is what creates the pyloric sphincter, which controls the movement of chyme into the duodenum. This layer is concentric to the longitudinal axis of the stomach. (note: chyme is a thick and acidic mixture of acidic digestive fluids and partially digested food, which moves from the stomach to the small intestine as digestion moves along the digestive tract.)

id

UBERON:0008857